import router from './router'
import store from './store'
import { Message } from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import { getToken } from '@/utils/auth' // get token from cookie
import getPageTitle from '@/utils/get-page-title'
const _import = require('@/router/_import_' + process.env.NODE_ENV) // 获取组件的方法
import Layout from '@/layout/index' // Layout架构组件

NProgress.configure({ showSpinner: false }) // NProgress Configuration

const whiteList = ['/login', '/authorization', '/register', '/queueingSystem', '/BrushIdCard', '/queList', '/Form', '/trackOfVehicleForMobile'] // no redirect whitelist

router.beforeEach(async(to, from, next) => {
  // start progress bar
  NProgress.start()

  // set page title
  document.title = getPageTitle(to.meta.title)

  // determine whether the user has logged in
  const hasToken = getToken()
  if (hasToken) {
    if (to.path === '/login') {
      // if is logged in, redirect to the home page
      next({ path: '/' })
      NProgress.done()
    } else {
      // determine whether the user has obtained his permission roles through getInfo
      const hasRoles = store.getters.resourcelist[0]
      if (hasRoles) {
        next()
      } else {
        try {
          await store.dispatch('user/getInfo')
          // 基于角色生成可访问路由图
          // const nestedRouter = filterAsyncRouter(arr) // 1.过滤路由
          const nestedRouter = filterAsyncRouter(store.getters.resourcelist[0].children) // 1.过滤路由
          nestedRouter.push({ path: '*', redirect: '/404' },)
          const accessRoutes = await store.dispatch('permission/generateRoutes', nestedRouter)
          // 动态添加可访问路由
          router.addRoutes(accessRoutes)
          // 确保addRoutes完整的hack方法
          // 设置replace:true，这样导航就不会留下历史记录
          next({ ...to, replace: true })
        } catch (error) {
          console.log(error)

          // remove token and go to login page to re-login
          // 移除令牌并转到登录页以重新登录client_id
          await store.dispatch('user/resetToken')
          Message.error(error || 'Has Error')
          next(`/login?redirect=${to.path}`)
          NProgress.done()
        }
      }
    }
  } else {
    /* has no token*/

    if (whiteList.indexOf(to.path) !== -1) {
      // in the free login whitelist, go directly
      next()
    } else {
      // 没有访问权限的其他页将重定向到登录页。
      next(`/login?redirect=${to.path}`)
      NProgress.done()
    }
  }
})
router.afterEach(() => {
  // finish progress bar
  NProgress.done()
})

// 遍历后台传来的路由字符串，转换为组件对象
function filterAsyncRouter(asyncRouterMap) {
  const accessedRouters = asyncRouterMap.filter(route => {
    if (route.component) {
      if (route.component === 'Layout') {
        route.component = Layout
      } else {
        route.component = _import(route.component) // 导入组件
      }
    }
    if (route.children && route.children.length) {
      route.children = filterAsyncRouter(route.children)
    }
    return true
  })

  return accessedRouters
}
